Balanced door for stoves or grates



(No Model.)

G. WELLHOUSE. BALANCED DOOR FOR STOVES 0R GEATES.

313303349. Patented Aug. 12,1334,

n. PEYCR$. mmmmw m. Wulnnglon. I:v cv

NITE ST TES v PATENT ()FEICE.

GEORGE wnnnnousn, or AKRON, OHIO.

BALANCED DOOR FOR STOVES OR GRATES.

SPECIFICATION forming part of Letters Patent No. 303,349, dated August12, 1884.

Application filed October 23, 1883. (No model.)

of the invention, such as will enable others skilled in the art to whichit pertains to make and use the same.

My invention relates to improvements in balance-doors, adapted moreespecially for stoves and grates; and it consists of certain features ofconstruction and in combination of parts hereinafter described, andpointed out in the claims.

In the drawings, Figure 1 is a front elevation. Fig. 2 is a side viewwith parts of the casing omitted. Fig. 3 is a front elevation of thepinions and shaft. Fig. 4 is a side elevation of a segmental rackadapted to be our ployed in place of the sliding weight.

A represents the door operating vertically, and guided at the ends bysuitable ways or grooves, and provided with a knob or handle, A. Thedoor, on the back side and at each end, is provided with a rack, a,preferably integral with the door. These racks engage,

respectively, the pinions B, that are preferably rigidly attached to theshaft b, that may be j ournaled at or near the ends to any c011- venientpart of the jambs, casing, or stationary part of the structure.

C are balance-weights,provided each with a rack that engages the pinionsB on the back side. The combined gravity of two weights balances theweight of the door. These weights can be provided with grooves in theirfront faces, in which the pinions move, or they can be guided'betweenbeads secured within the stove or fire-place, or by beads resting in agroove formed in the weights. Other constructions may be had,accordingto the peculiar requirements in special cases.

When there is suflicient room behind the door, the sliding weights 0 canbe dispensed with, and the construction shown in Fig. at employedinstead. This device is simply a segmental rack provided withrearwardly-extending arms (1, which latter terminate in a bearing, (1,by means of which the racks are pivotally secured in position. The toothporstraight door, although I prefer the, former' construction, as itprevents the door from be ing cramped in the grooves or guides.

By means of the mechanism described and shown the door may be raised orlowered at pleasure, and will remain in any position (10 sired.

I am aware that it is not broadly new to balance windowsashes bymeansofpinions engagin g rack-bars on the window'sash and rack-barsattached to the balance-weights, and hence I make no broad claimthereto. In these saslr balances the pinions are disconnected andrevolve independently, and hence,if the balances vary slightly inweightthe pinion carrying the heavier weight, will turn faster than the onecarrying the lighter weight, (when the weights are descending) andconsequently wedge the sash. In my device the pinions are rigidlysecured together, andcan be operated, if necessary, by a single pinionon one side without wedging the parts.

\Vhat I claim is 1. In a door for grates or stoves provided on its rearface, near opposite sides, with racks, in combination with pinions B,rigidly secured together'by the bar I), and a counter weight meshingwith each pinion, substantially as set forth.

2. The combination, with a sliding stove or grate door provided 011 itsrear face with rackbars a, of pinions B, rigidly connected together bythe rod I), and the sliding weights 0, provided with IL(3l{-1366l1h,which latter mesh with the teeth of the pinions, substantially as setforth.

In testimony whereof I sign this specification, in the presence of twowitnesses, this 26th day of September, 1883.

GEORGE XVELLHOUSE.

Vitncsses:

ALBERT E. LYNCH, OHAs. H. DORER.

